package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import jdk.javadoc.internal.doclets.toolkit.DocletException;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;


    /**
     * 新增套餐
     * @param setmealDTO
     */
    @Transactional
    public void saveWithDish(SetmealDTO setmealDTO) {
       // 保存套餐基本信息
       Setmeal setmeal = new Setmeal();
       BeanUtils.copyProperties(setmealDTO,setmeal);
       setmealMapper.insert(setmeal);

       // 保存套餐和菜品的关联关系
        Long setmealId = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
           setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmealId));
           setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 套餐分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 根据id查询套餐
     * @param id
     * @return
     */
    public SetmealVO getByIdWithDish(Long id) {
//         Setmeal setmeal = setmealMapper.getById(id);
//         List<SetmealDish> setmealDishes = setmealDishMapper.getByDishId(id);
//         SetmealVO setmealVO = new SetmealVO();
//         BeanUtils.copyProperties(setmeal,setmealVO);
//         setmealVO.setSetmealDishes(setmealDishes);
//         return setmealVO;
        SetmealVO setmealVO = setmealMapper.getByIdWithDish(id);
        return setmealVO;
    }

    /**
     *更新套餐
     * @param setmealDTO
     */
    public void updateWithDish(SetmealDTO setmealDTO) {
         // 更新套餐基本信息
         Setmeal setmeal = new Setmeal();
         BeanUtils.copyProperties(setmealDTO,setmeal);
         setmealMapper.update(setmeal);
         // 先删除套餐和菜品的关联关系
         List<Long> setmealDishIds = new ArrayList<>();
         setmealDishIds.add(setmealDTO.getId());
         setmealDishMapper.deleteBySetmealId(setmealDishIds);
         // 保存套餐和菜品的关联关系
         List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
         setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmealDTO.getId()));
         setmealDishMapper.insertBatch(setmealDishes);
    }

    /**
     * 批量删除套餐
     * @param ids
     */

    public void delete(List<Long> ids) {
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE){
                //起售状态不能删除
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        // 删除套餐表中的数据
        setmealMapper.deleteById(ids);
        // 删除套餐和菜品的关联数据
        setmealDishMapper.deleteBySetmealId(ids);
    }

    /**
     *
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder().id(id).status(status).build();
        setmealMapper.update(setmeal);
    }


    public List<Setmeal> list(Setmeal setmeal) {
        return setmealMapper.list(setmeal);
    }


    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

}
